摘要:
Original data is copied from a read-only recording medium to a rewritable portable recording medium. A data storage unit stores therein updated data and mapping information indicating a path of the updated data in the virtual package. A determination unit determines, from the mapping information, a match between a path on the portable recording medium of first stream data included in the original data and a path in the virtual package of second stream data included in the updated data. When the match is determined, the recording control unit instructs that the first stream data be deleted from the portable recording medium. The recording control unit further instructs that the updated data be written on the portable recording medium. The data recording unit further writes and deletes data in response to the instructions from the recording control unit.
摘要:
A BD-ROM has recorded thereon: a plurality of subtitle streams each configured for playback in sync with a video stream; and PlayList information. The PlayList information includes PlayItem information and a display method flag. The PlayItem information defines a playback section with information indicating In_time and Out_time of a playback time axis of the video stream and includes a stream information table. The display method flag indicates whether or not control according to a subtitle display method is valid. The stream information table specifies to, a playback apparatus, one of the subtitle streams to be selected if the control according to the subtitle display method is valid.
摘要:
A BD-ROM has recorded thereon: a plurality of subtitle streams each configured for playback in sync with a video stream; and PlayList information. The PlayList information includes PlayItem information and a display method flag. The PlayItem information defines a playback section with information indicating In_time and Out_time of a playback time axis of the video stream and includes a stream information table. The display method flag indicates whether or not control according to a subtitle display method is valid. The stream information table specifies to, a playback apparatus, one of the subtitle streams to be selected if the control according to the subtitle display method is valid.
摘要:
Provided is a playback device which enables, when playing back a recording medium having recorded thereon a digital stream and an application program, an execution result of the application to be shared among a plurality of devices. By having a Java application data writing unit 604 operable to output, to the outside of the playback device, data stored in an ADA 602, which is an area capable of being accessed by a Java application identified by an identifier held by a BD-ROM, the playback device generates data which can be input to another device. By having a Java application reading unit 605 operable to read out information which can be used during an execution of the application from a data export medium 606 being a removable medium to store the read out data in the ADA 602, the playback device can inherit information of another playback device, and play back the recording medium continuously.
摘要:
A loader section (102) for converting a program from a class file to a runtime execution format, a runtime saving section (103) for performing a runtime saving process by which a runtime execution format is converted to a temporary runtime execution format, a temporary runtime execution format storing section (302) for storing a temporary runtime execution format, and a post-loader section (105) for performing a post-loader process by which a temporary runtime execution format is converted to a runtime execution format are included, and determination is made whether or not there is a temporary runtime execution format in the temporary runtime execution format storing section when a start-up of a program is instructed, the loader section is requested to perform conversion to a runtime execution format if there is none, and the post-loader section is requested to perform conversion to a runtime execution format if there is any. As a result, it is possible to reduce a start-up time of a downloaded program in a program distribution service.
摘要:
A service program recorded on a portable medium is executed directly or after being installed temporarily in a long-term storage apparatus. A program execution device prevents unrestricted execution of the program when the portable medium is not inserted in the device, from the viewpoint of managing resource access to the device. The program is attached with permission information indicating resource access rights. According to an acquisition route of the program to be executed, first permission information and second permission information indicating different access rights are applied for executing the program.
摘要:
When a plurality of AVClips recorded on a BD-ROM and Local Storage 18 constitute one stream sequence, a Playback Control Engine 32 starts playback if at least one AVClip of the stream sequence is in an enable status, even when the stream sequence also includes an AVClip which is in a disable status. While one AVClip is being played back, a Virtual FileSystem unit 38 changes a remaining AVClip to the enable status of being recognizable by the Playback Control Engine 32 or the disable status of being unrecognizable by the Playback Control Engine 32, according to a method call by an application.
摘要:
To provide a terminal device capable of independently determining an occurrence of an event, and autonomously processing a service in response to the event. An event detection section (205) detects a predetermined event. A service retrieving section (206) retrieves a service corresponded to the detected event. A service execution section (207) determines an application program related to the retrieved service, and another terminal device which cooperatively executes the application program. Then, the service execution section (207) instructs an application management section (203) and an application execution section (204) of the own terminal device and the other terminal device to obtain and execute the program.
摘要:
A program conversion apparatus that converts a source program to an executable program, the source program including a first descriptor indicating dynamic memory allocation. The program conversion apparatus includes a specifying unit and a generating unit. The specifying unit specifies in the source program a reference descriptor that is last to be executed from reference descriptors indicating references to memory allocated by the first descriptor. The generating unit generates an instruction for freeing the allocated memory at a position in the executable program immediately following an instruction that corresponds to the specified reference descriptor.
摘要:
A playback device reads an application and a digital stream from a recording medium to execute the application with playback of the digital stream. The playback device includes a management unit operable to verify authenticity of the application by judging whether a disc root certificate is identical to a first root certificate, and an execution unit operable to execute the application if authenticity of the application is verified by the management unit. The playback device also includes a storage unit having a storage area that is specified by a file path that uses the provider ID and a hash value of a second root certificate, and a playback unit operable to play back the digital stream in accordance with the playlist information.